Fork over $13.5 million and the 4,700 square feet of gracious and bright living space in the 235 West 71st Street penthouse is all yours!

This property has the best of both worlds—turn-of-the-century charm and solid construction, plus the convenience and comfort of all new mechanicals and interiors, the Brown Harris Stevens listing says.

The living space is so big, these brokers can't even decide how to measure it. For starters, it's over 70 feet long. Having trouble visualizing that? It's the equivalent of three to four large entertaining rooms. They are all facing south and west with huge picture windows, partial river views, gas fireplace and over 10 foot ceilings.

Clearly, bigger is better. The place includes an "enormous chef's kitchen," four "large bedrooms" with three "full bathrooms in the bedroom wing," a "huge fifth bedroom and full bathroom," a "good sized staff room," and "amazing closet space" throughout.

Want some more numbers? In addition to the gracious, bright 4,700 square feet, you'll also get 1,700 square feet of private terrace rooftop space, and guess what, the views are open!! —Sam Levin